Method for the detonation of explosives.



H. BRUNYSW-IG. 'METHOD FOR THE DETONAT'ION OFEXPLOSIV'ES.

'APPLIUATIUNQFILED AUG. e', 1911.

Patented Oct. 29, 1912,

. f.. d n? 'IY/THESSA: i ai ma,

UNH-ED HEINRICH BRUNSW, or siEcrLrrz,Y NEAnisERLI'N, GEEMANY, AssrsNoE 'ro E. I. nu

roN'r n NEMOURS POWDER COMPANY, '.z'roN or NEW JERSEY. l

'METHOD vEen. THE DE'roNA'rIoN or ExPLQsIVEs.

To (di whom t may concern.'

Beit known that I, HEINRICH BRUNswIG, a subject of the Emperorf Germany, resid-l ing at Steglitz, near Berlin, Germany, have invented a new and useful Improvement in such a manner that an actual Wave of detonation proceeds at al uniform velocity along this fuse, and `Wherever the f'use is used 1nI this specification, this particular thing is lmeant. To start such a denonating fuse, the 20 general method of procedure -is to have a 4detonating cap in the end of the same which [starts the Wave of detonation along the detonatin fuse. This detonating fuse differs -from te ordinary powder fuse in that instead of having merely a burning material` in it, it isnecessary for lit to have a detonatthe action of the same.- This is, for instance,

- condition.

ing material'throughout its length. 'I have discovered that the action of such detonating fuses is considerably increased if the 'fuse is detonated on opposite sides of the portion' thereof which is in contact with the explosive mass lto be detonated. vIn thisl case the vtwo the case When a detonating fuse l0() cm. in length is Wound aroundthe'explosive in such a manner that the center of the fuse, the

stretclrfrom about the 45th to the 55th cm.

is in intimate contact vwith the explosive.- I .determined by tests' the increased initial effect-brought about under the preceding The substances to be detonated were pressed bodies made of trinitrotoluol o f a density of 1.6. 4Three series of tests yWere carried out with three different deto- OF WILMINGTON, DELAWARE, .A CORORA- speemeati'n or Leners Patent. Patentedct. 29,1312. i Application med Auguste, 1911. senat NQ. 643,076.

. L., nating fuses. The vignition was b about by means of detonating fuses; the core of the first fuse consisting of trinitrotoluol,

chlorid'.and that of the third vinse oftetranitromethylanilin. The detonation was ei'ected by means of a fulminate of mercury "cap o.

ously on both ends, in the other, lfor 'purpese of comparison, on one end only. as

the fuse a detonation lWas efectedin in'- stances in which with a single ignition a parabout. 1

charges of all kinds,forfmningv operations aswell as for military explosives, in bursting shells, mines, etc.

In the drawings, the igure'is aside View;

my improved process may be carried out.

fuse; d. the fulminate of mercury; e the blasting cap;` andv f the ordinary electric blasting fuse. The point where the two explosivewaves meet and-'produce the stronger etlect is indicated bythe reference letter g..

Having now fully described my invention,

ters Patent is:

The improvement"'in the method of detA from two places infsuch a ma-nnerrlthat the 5 HEINRICH RUNSWIG.

' WOLDEMAR HAUPT,` f

HENRY HASPER.

roh-gut 8, in one series of experiments simultnea-f largely in section, of an apparatusby which a represents the explosive to be detonated; b the casingr and c the crore, of the detonating two detonationfwaves running Atovvard'each that of the second fuse of trinitrobenzol thus vshown that with a' doubleignition of i tial explosion or no explosion was brought` y ."'This Imethod can be used for explosive l' `vvhat I claim and desire to protect by 'Let-.

-so l onating explosives by means of adetonating fuse, which consists in detonating the fuse In testimonyof which invention, I have 

